Hydrocarbon-burner



P. B. JOHNSON. HYDROCARBON BURNER.

APPLICATION FILED JUNE 12, I920- .1,381,560. Patented June 14, 1921.

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UNITED STATES PATENT OFFICE.

PETER B. JOHNSON, 0F SEATTLE, WASHINGTON.

HYDROCARBON-IBURNER.

Specification of Letters Patent. Patented June 14, 1921.

Application filed June 12, 1920. Serial No. 388,661.

Burners, of which the following is a speci-' fication.

My invention relates to improvements in hydrocarbon burners and to improvements in thermostatic means for controlling the supply of fuel to such burners and the object of my invention is to provide a simple and efiicient burner that is adapted to burn kerosene, crude oil or other crude petroleum products.

Another object is to provide a burner embodying a thermostatic control by which the fuel supply is automatically shut off when the burner becomes cold thereby eliminating the danger of flooding the burner with fuel with the consequent possibility of explosion and fire.

A further object is to provide a burner in which the flame from the side burner elements is directed outwardly and upwardly in such a manner as to prevent the main body or casing of the burner from becoming intensely hot thereby tending to eliminate all possibility of back fire within the said burner casing.

A still further object is to provide a burner having an expansion chamber for the reception of the gas after it is generated the said expansion chamber having a plurality of separably controlled burner elements I for the outlet of the gas.

A still further object is to provide a burner embodying novel means for cleaning the gas outlet aperture formed in the gas generating element of the burner.

A still further object is to provide a burner embodying simplicity, durability and economy in construction, that may be readily dismantled for removal and renewal of parts; that is positive and eflicient in operation and that will not readily get out of order.

With the above and other objects in view, which will be apparent as my description proceeds my invention consists in the novel construction, adaptation and combination of parts of a hydrocarbon burner as will be more clearly hereinafter described and claimed.

In the accompanying drawing Figure 1, is

a plan view looking down on the top of a burner constructed in accordance with my invention,

Fig. 2, is a view in side elevation of the same,

Fig. 3, 1s a view in end elevation of the same, and

Fig. 4, 1s a View in cross section substantlally on a broken line 4--4 of Fig. 2.

Like reference numerals designate like' parts throughout the several views.

Referring to the drawings, the numeral 5 des gnates the base of the burner casing which base 5 is provided with end plates 6 and 7 and with side plates 8 and 9, the said end plates and side; plates being integral wlth the base 5 or otherwise rigidly secured thereto in such a manner as to form a substantially rectangular expansion chamber 10. Extending lengthwise between the end plates 6 and 7 in substantially the same plane as the top edge of the side plates 8 and 9, is a trough like receptacle or priming pan 11, within which is disposed non-com vbustible absorbent material as indicated at 12, the said priming pan being adapted to receive liquid fuel which is lighted for the purpose of heating up the burner.

Extending lengthwise of the burner on opposite sides of the priming pan 11 are two perforated plates 13 and 14: that are preferably slidable in grooves 15 in the priming pan 11 and side walls 8 and 9 respectively as shown in Fig. 4, and that constitute removable burner elements through which gas may be emitted from the expansion chamber 10.

Other burner elements are formed by angularly disposed perforated burner plates 16 and 17 that are secured to the side walls 8 and 9-and rest uponthe upwardly projecting outer edges 18 of the base 5 in such a manner as to form fuel chambers 20 and 21 of triangular cross sectional shape from which gas may be emitted through the perforated burner plates 16 and 17 The fuel chambers 20 and 21 communicate with the expansion chamber 10 through openings 22 in the side walls 8 and 9 which openings 22 are adapted to be closed by sliding doors 23 that are arranged to be moved by rods 24 that project outwardly through packing boxes 25 in the end of the burner casing. The doors 23 form an easily operated means for shutting off the feed of fuel to the chambers 20 and 21 or for regulating such feed of fuel to regulate the heat of the wardly bent inlet end 27 and a downwardly bent outlet end 28 at the front end of the burner. The coil 26 is supported above the top of the burner and in symmetrical relation with respect to such burner by two brackets 30, 31, that are secured to the end 7 of the burner housing and one bracket 32 that is secured to the end 6 of the burner housing, the coil being securedvto the several brackets by set screws 33 in such a manner that it may be easily and quickly removed.

The inlet end 27 of the vaporizing coil is connected by an elbow fitting 34 with a valve 35 which valve is provided with a tubular shank 36 that may be connected with a fuel inlet pipe, not shown, through which liquid fuel under pressure may be introduced.

The outlet end 28 of the vaporizing coil is provided with a perforation 37 through which gas may be emitted and such outlet end extends for a considerable distance below the perforation 37 to form a sediment trap having a screw cap 38 that may be removed to permit such sediment trap to be cleaned out. p

The outlet end 28 of the vaporizing coil is provided at a point directly opposite the perforation 37 with a boss 40 that is connected with a packing box 41 through which is threaded a pointed stem 42 that may be screwed inwardly to cause the point thereof to project through the perforation 37 and clean the same out in case such perforation becomes clogged.

The gas outlet perforation 37 is arranged to direct a jet of gas centrally into the end of a tubular condult 43, which I term a Bunsen tube, and which extends into the expansion chamber 10 to a point about midway between the two ends of the burner and has an upwardly curved wall 44 at its inner end that closes the bottom half of such tube as is more clearly shown in Figs. 2 and 4, and tends to direct gasified fuel that is emitted from such tube upwardly. The tube 43 is open at the outer end so that if any liquid fuel is accidentally introduced into such tube it will drain off quickly and will not enter the ex pansion chamber 10.

The valve 35 that controls the inlet of fuel is arranged to be opened and closed by the turning of a valve stem 45 that is secured to an upwardly projecting portion of the end wall 7 and the upper end 52 of such arm is arranged to project through an opening in one end of a bar 53 of thermostatic metal that rests upon the end wall 7 and extends lengthwise in the medial plane of the burner and the other end of which is rigidly secured to the end 6 of the burner casing. The thermostatic bar 53 is preferably of hexagonal cross section throughout the greater portion of its length but may be flattened at its two ends substantially as shown in Fig. 2. When the thermostatic bar is hot it will elongate and by reason of its connection with the actuating bar 50 will open the valve 35 thus permitting fuel to flow to the burner. When the thermostatic bar cools off it will contract in length and will move the actuating bar to close the valve 35 thus shutting off the supply of fuel and preventing flooding of the burner in case the flame of such burner is accidentally extinguished.

When the burner is to be lighted liquid fuel is poured into the priming trough 11 and ignited and allowed to burn to heat the vaporizing coil 26 and thermostatic bar 53 thus causing the bar 53 to elongate and open the valve 35 thereby admitting liquid fuel to the coil '26 which has already been heated so that as the liquid fuel moves toward the discharge end of such coil it will be va orized and thoroughly gasified and wil be emitted from the perforation 37 under pressure in the form of a jet of gas'that is directed inwardly through the conduit 43 and will tend to draw air inwardly along with it.

The gas passes from the tube 43 into the chamber 10 where it has an opportunity to expand andmix more thoroughly with the air that also enters through the tube 43 before it is emitted from the perforations in the burner plates and burns.

When the burner is working properly the pressure of the gas within the expansion chamber 10 will be slightly inexcess of atmospheric pressure and the gas that is emitted from the perforation in the plates 13, 14, 16 and 17 will burn with a clean, hot, blue flame.

The heat of the burner may be regulated by regulating the supply of fuel to such burner and the flame from the side burners 16 and 17 may be-regulated or entirely shut ofl by adjustment of the gates or doors 23.

From the foregoing description taken in connection with the accompanying drawings v a priming gether with the device which I, now con-' sider to be the best embodiment thereof it will be understood that the device shown is A merely illustrative and that such changes in the construction thereof may be resorted to as are within the scope of the following claims. v I

.WhatIclaini is: 1. An oil burner comprising a relatively long rectangular base, end .walls projecting upwardly from said base, sidewalls rojecting upwardly from said base, said: ase extending outwardlybe ond said side walls,

pan exten ing lengthwise between said two end walls centrally of said burner, a horizontal rforated burner plate disposed on each vsi e of said priming pan said burner plates and said priming pan constituting the top wall of said burner, angularly disposed perforated side burner plates extending from the-edges of said base to said si chambers of triangular cross sectional shape, the said side walls havingopenings for the admission of fuel to said chambers, doors for said openings, means extending to the exterior of the burner for opening and closing said doors, a tubular conduit said burner above the projecting into the interior of and a vaporizing coil dis burner body and having a ownwardly projecting' end provided with a outlet rforation for directing a jet 0 I fuel gas into said' lconduit. f l

2. 0' urner com areative long rectangular base, aim projecting upwardly from said base, side walls projecting upwardly from said base, a p trough extending lengthwise between end walls mediall of said burner, a re-r rforated disposed, trough extending media movable pe burner plate on each s de of saidpriming trough, said. burner plates and said priming trough stituting the top wall of said burner, a U shaped vaporizing coil supported above the burner plates, a tubular conduit projecting into one end of said burner, and a downturned end on said vaporizing coil, said downturned end having a perforation therein that is arranged to eliver a ,jet of gas into 'saidtubular conduit. 1

3. An oil burner comprising a relatively long rectangular base, end walls projecting upwardly from said base, side walls projecting upwardly from said base, a prim trough .extendi lengthwise between sai end'wall media y of said burner, a removable perforated burner plate u each side of said priming trough, said burner plates and said priming trough constituting the top wall of said burner, a U shaped fuel lighted an e walls and formmg fuel' long rectangular base, end

, the top wall of said burner, a U shaped coil supported above said burner plates, a tubular conduit projecting into one end of said burner, a downturned end on .said vaporizing coil, said downturned end having a perforation formed therein that is arranged to deliver a jet of gas into said tubular conduit, avalve controlling the inlet of liquid fuel to the said U shaped .fuel vaporizmg coil, and thermostatic means disposed within the area heated by said burner for openin said valve when said burner is a closing said valve when said burner is extinguished.

,4. An oil burner comprisin a relatively long rectangular base, end wals projecting upwardly from said base, side walls project ing upwardly from: said base, a primin trough exten lengthwise between sai end walls media y of said burner, a removable perforated burner plate disposed on each side of said priming trough, said burner plates and riming trough constituting the top wall of said burner, a U shaped fuel vaporizing coil supported above said burnerplates, a tubular conduit projectirfi into one end of said burner, a downturn end on said vaporizing coil, said downturned end ha a perforation'formed therein that is arraii g l to deliver a jet of gas into said of liquid fuel to the said U-shaped fuel vaporizmg coil, a thermostatic bar a to receive the heat from said burner,'means on. said burner adaptedto rigidly support one end of said her, and actuating means nter posed between the other end of saidbar and said valve for opening said valve in response to the elongation 0' said bar and closing aidvalve 'in response to shortening'of said I I v 5. 'An oil burner comp a relativel walls a1psrojecting upwardly from said base, sidew projecting upwardly fromsaid base; a lengthwise between sai end walls y of said burner, a removable rforated burner plate on each side of said priming trough, said burner plates andsaid priming t "ugh constituti"1 e vaporizing coil supported abovethe burner plates, a tubular conduit projecting into one end of said burner, a downturned end on said vaporizing coil, said downturned end perforation 'formed therein that is having a i to deliver a jet of gas into, said tuarranged bular conduit, a valve controlling the inlet and . and

ing upwardly from said base,

ing coil, said thermostatic bar having one end ri idl su orted by said burner body th 'otlier gri dconnected with said actuating bar.

6. An oil burner comprisin a relatively long'rectangular base, end wa ls projecting upwardly from said base, side walls projectsaid base extending outwardly beyond said side walls, a priming trough extending lengthwise between said end walls medially of said burner, a horizontally disposed and removable perforated burner plate disposed on each side of said priming trou h, said burner plates and said priming troug constituting the top wall of said burner, 'angularly disposed and removable perforated side burner plates extending from the edges of said base to said side walls and forming fuel chambers of triangular cross sectional shape, said side walls having openings for the admission of fuel to said chambers, doors for said openings, means extending to the exterior of the burner for foration formed therein that is arranged to deliver a jet of gas into said tubular conduit, a valve controlling the inlet of liquid fuel-to said U shaped fuel vaporizing coil, a stem on said valve, a leverarm adjustably secured to said stem, a pivotally mounted actuating bar arranged to engage with said lever' arm for opening and closing said valve, and a thermostatic bar extending lengthwise of said burner body and above the said U shaped fuel vaporizing coil said thermostatic bar having one end rigidly supported by said burner body and the other end connected with said actuating bar.

In witness whereof, I hereunto subscribe my name this 5th day of June, A. D. 1920.

PETER B, JOHNSON.

into one end of said 

